Saturday, December 26, 2009

On the Rise...

Creeks in the lower Delaware River watershed are rising out of their banks with more rain to come and that speaks to the fact that they had more snow on the ground than many areas upriver from the tidal zone.

The NWS has a FLOOD WARNING issued for the Brandywine, White Clay, S. B. Rancocas, and Cooper to name just a few. The lower Neshaminy at Langhorne was surging for flood stage but that suddenly began to drop so the snow melt might be finished and the rain is beginning to taper off. The Brandywine at Chadds Ford is already approaching flood stage.

The Delaware River at Riegelsville is just beginning to rise and running above normal but not by that much. However the Lehigh River is coming up quickly and that will push the Delaware up overnight but not to 20 feet (22 feet is beginning of flood stage). Piedmont tribs like the Wickecheoke, Locatong and Tohickon are rising rapidly as well and these will impact the river below Frenchtown.

It looks like the aforementioned creeks and rivers that are subject to the flood warning will have a rough night.